From a technical standpoint, this is great. You have a consistent artstyle, sound effects and all the elements are working properly without any glitches as far as I know.
But when it comes to game design, this game has three mayor issues:
- The pacing is way to slow. This could be fixed by making the levels a lot smaller. This would also reduce the punishment for doing wrong.
- The first level is to complex. Instead of throwing everything in the players face, you could introduce each element one after another.
- There is very little skill involved. The difficulty instead lies in performing commands and guessing how you made the mechanics works. You could either have puzzles or real time action to make it more challenging.